/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import React from 'react';
import { shallow } from 'enzyme';
import FallbackComponent from '../../../src/chart/components/FallbackComponent';

describe('FallbackComponent', () => {
  const ERROR = new Error('CaffeineOverLoadException');
  const STACK_TRACE = 'Error at line 1: x.drink(coffee)';

  it('renders error and stack trace', () => {
    const wrapper = shallow(
      <FallbackComponent componentStack={STACK_TRACE} error={ERROR} />,
    );
    const messages = wrapper.find('code');
    expect(messages).toHaveLength(2);
    expect(messages.at(0).text()).toEqual('Error: CaffeineOverLoadException');
    expect(messages.at(1).text()).toEqual('Error at line 1: x.drink(coffee)');
  });

  it('renders error only', () => {
    const wrapper = shallow(<FallbackComponent error={ERROR} />);
    const messages = wrapper.find('code');
    expect(messages).toHaveLength(1);
    expect(messages.at(0).text()).toEqual('Error: CaffeineOverLoadException');
  });

  it('renders stacktrace only', () => {
    const wrapper = shallow(<FallbackComponent componentStack={STACK_TRACE} />);
    const messages = wrapper.find('code');
    expect(messages).toHaveLength(2);
    expect(messages.at(0).text()).toEqual('Unknown Error');
    expect(messages.at(1).text()).toEqual('Error at line 1: x.drink(coffee)');
  });

  it('renders when nothing is given', () => {
    const wrapper = shallow(<FallbackComponent />);
    const messages = wrapper.find('code');
    expect(messages).toHaveLength(1);
    expect(messages.at(0).text()).toEqual('Unknown Error');
  });
});
